They find interests in many different things, such as helping the elderly, letterboxing when they have free time, rearranging the furniture at home, and decorating seasonally for their mother, entertaining, sewing and cooking, all which take enormous amounts of time.

It would have to perform with near-perfection: even if it turns out that it catches every single infringement except for video that is re-cut to 16: 9 with letterboxing at 31fps, then all the pirates will just encode it that way and evade the filter, meaning that the system would generate an unacceptable level of false negatives.